unattended-upgrade command not found

Introduction

When you run more command in linux terminal / console, you get the following error message

unattended-upgrade: command not found

or when using sudo you get the following error message

sudo: unattended-upgrade: command not found

Solutions to unattended-upgrade: command not found

How To Fix unattended-upgrade: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu unattended-upgrade is provided by unattended-upgrades package.

unattended-upgrades is:

This package can download and install security upgrades automatically and unattended, taking care to only install packages from the configured APT source, and checking for dpkg prompts about configuration file changes.

This script is the backend for the APT::Periodic::Unattended-Upgrade option.

To fix this problem, we can install more using the command below.

sudo apt-get -y install unattended-upgrades

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install unattended-upgrades.

sudo apt -y install unattended-upgrades

Or if you have aptitude installed you can use the following command.

sudo aptitude install unattended-upgrades

Summary

In this tutorial we learn how to fix unattended-upgrade command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.